Vapor-stove construction



A. J. YEAGER 1,749,174

VAPOR STOVE CONSTRUCTION March 4, 1930.

Filed March 2.8, 1929 @afm J Yeager 'i "controlling the 4iovv' vof under "pressure Merlil. l I l fnn'PvI'nsfWIscoNsIN," 'A c oRronAT'IoN 0F a 'new' and lim'-v so that itisbrned-in burners ofthe lvvckfrlii 11' less type'.- Such-stoves have heretofore .been

providedwith a variety of-means for causing .j the'initial vaporization of the fueliIr-start-.- jing-the stove.l l i-ff- ..tial that fuel bevaporized by heat-in .order 15- th'at`1tl1el stove maybe started, and this 'beati' l,has loeen'v `securedin.af.-.i'1u-1nber of different Y Y. i i 1.5.5?-Refllllgistvto Figuresfl-and 2', the fuel tankj11 islet-usual construction and is shown as provided- With a. filling-opening '12 `and It. has vbeen. considered essen- With some forms of stovel a cup is provided. located below the generatorjV valve or generator pipe,'and some ofthe liqf.`r uid fuel is placedl in the -cupand lighted -tof heat thev generator. A .A form -called a match lighter has lb ee'n-developed inwhich aj-sepal' rate small,f {encratirlg valve is heated 'by hold.l ing a match under it, vwhereupon it'may loe opened to deliver-afsmall' flamel whichin, turnheats :the large lgenera'tor valve, 'The large generator'valve 4is then turned onand when heated, the small generator, heated-bv' 3 the match, is turned oil". All of these various forms vof lighters or preheatersinvolve several steps on the part of the person oper'- forethe Stove is readyl for service.

Itis anobject of thel present invention to ating the stove and an appreciable delay ,be-v

A provide aconstruction-W'herein the stove ymay vbeinstantly lightedA withoutan'y preheating'.

Itis an additional object to"provid'e a con- ,0 struction f this character in whichinaial I combustion `is carried on with a'mixture of Y airand fuel-under pressure, the vair-andjfuel j coming from the fuel tankof the stove.v Y.

Itis ajfurther obCttoprovide a construe- :ftion :means are providedffor. pref I J-venting the deposition oit-'fuelinv-thegeneral:

A 1to1-'from the mixture-ofjjuel1andair( 1 Itis an addifionalebjcf to previa@ an'ixing valve constrxiction -ivherein' the vorifices Vin Whi shown in Figure 1- generatorvalve; and

.Figurei-isa @carinii-,aken '0nfiale bf with' a[valvef-l'provided with a- 'threaded tend' V14e whicli may be connected with any suitable source of compressed air. A double -m'eter 1 5 is provided with .a scale 16 and corresponding pointerfor indicating the "amount vof fuel inthe tank and with a second .scale 17vr and `corresponding pointer for indicating'the air pressure in the tank..

Aniixing valve-18 is -threaded into a'flange 19 in the top of the tank, and is provided with a valve stem 20"'andvalve hand1e21. This valve 18 is connected to a fuell'pipe 22 which is conneetedby means o felbov'7 23 vtothe T 24, which is threaded into the top 'of the tank and is provided with an inner extension, 'not shown, which extendsadjacent thebottom of the tank. This T. 24 has connected thereto the main fuel valve 25 provided with a han- Vdle 26.' lThe valve 25 'is connected by a pipe '27 with ai threaded nipple 28 extending from the generator body .member 29.v This mem# 'ber29 'is provided .with a lug 30vfor securing the V,gwenersltor assembl` to axedportion of 'the stove;

Y The 'memberf29 ha's v a tubular member'l threadedtherein and isalso pro` :vided With avalve stein 82'and valve handlei- 1a. ,men-'3;onjvviscoirsin wisconsin, AssiGNoR 'To PRENTIss- I l*nocifsgoo.,.orwscolvsm' 1 Fig-ilrefisalongitudinaljseetionithrough i pipe 34E with themixing' valve 18.V Y

Y the "generatorassembly vmore in" detail, fthe'lf' Vval-ve ste'm32 has'v x11- threaded portion .which portion 42 itted in the reduced end 43 of the member 31. The portion 42 also carries the I lneedle-like extension 44 which passes through is held in place .by pin 47 extending through a small opening in vthe end of the discharge member 45.v The coil spring 46 surrounds the central portion ofthe valve stem :32 'and the valve stem. The pipe 27 is shown as secured to the threaded nipple 28 by the threaded sleeve 48 and this pipe 27 v has threaded therein the cap 49 which is provided with the calibrated orifice 50 through whichthe fuel passes and enters the generator valve through the opening 51. As best shown in Figure 1 the pipe 34, which carries the mixture of fuel Y and air Ito the generator valve. is 'similarly' secured to the lower portion of the member 29 by means of a sleeve 52.

Referring now to Figure 4, the mixing valve body 18 is shown threaded into the bushing 19 which is secured'in the top of the gas tank 11. The lower p'ortion53 of the member 18 which is threaded into this bushing,19,-carries in itslower end the plug-54 which is provided with the calibrated orifice 55. yThis orifice-permits the-air under pressure .in the top' of the tank to flow through chamber y56 .and `passage 57 into the mixing chamber 'surrounding the, 'valve stem' 20.

The valve stem 20 is providedwith a conical' head 58 adapted to seat against a yvalve seat 59 formed in the mixingjvalve body member 18. The passage 60 beyond (the valve seat 59 leads to the pipe 34, whichis connected to the generator' body member 29. The pipe 22 which is adapted to'lead fuel to the mixing valve is connected tothe elbow 61 which is threaded into the upper extensionl 62 of the valve `member 18. This extension62 carries the plug-63 threaded therein, this plugbeing provided with the calibrated orifice 64.

As shown in-Figures 1 and 2, the generator v tube 31 is adaptedl to discharge into the mixing tube 65 which leads through passage to I the burner 67 An orifice 68 is provided for the introduction of additional air to mix with the discharge Vfrornthe generator tube. It

will be understood thatany number of adllditional burners may bey connected to the tube 65 and any suitable valves may be provided for the control of the various connec- -In operation of the stove constructed -according to my invention, the tank 11 will be 65 provided with-fuel and with air lqcted `deposit of solid fuel at this point.

the valve 58v from its seat 59. This permits` air under pressure ,to flow yup through the.

orifice 55, chamber 56 and passage 57 into the chamber around the valve and past the vvalve seat and out throughpipe 34. If the I fuel tank is in a warm room this aijr will carry with it` a certain amount of entrained gasoline vapors. The unseating of thev valve 58, however, also permits liquid gasoline to come up through the T 24 and'through pipe 22 down throughthe orifice 64 into the mixing valve chamber and to 34 mixedvwith the air.

It will beapparen't that sary to vturn this one valve as the Vmain fuel supply valve 25 is'located beyond the T 24. There will now be amixture f fuel and .air flowing through pipe 34 to the generator pass out through pipe 'it is' only. liegts:

vvalve member 29. 1n order to permitthe How of this mixture into-the mixing tube 65 'out of the orifice at the end of the generator tube, the generator valve handle must be ro' tated to unseat valver 40 from'the valve seat 41 adjacent the discharge end'of the generator tube. 'The mixture of fuel and airA then flows around the valve stem 32 and out past the contro'l needle 44. It will be noted the elfecti'velflow area for the vf'ueland air and thus increases their velocity and preventsthe `The mixture of gasand air is further mixedwith additional air in the-mixing tube v65 and may be immediately lit by touching a match or other lighting means to the burner 67. The burner 6 7-islocated below the .generator tube'member 31 and serves to heat 'this member. As soonas this'member has been heated the valve 21 may be closed and the main fuel supplyfv'alve726-opened. Thiscuts oil' the supply'of a mixture of fuel and air for the generating valve ,and causes a .supplyof liquid` fuel.. This fuel, however, e

is gasied in the tube 31 andvis mixed with y air in lthe mixing tube 654 and'sup'plies the proper combustible mixture 'to the burner 67 The orifices inthe mixing'` valve'v may be I so proportioned as to supply anade'quate amount of lcombustible mixture to a .single burnerfsuch'as the burner 67 rlhis will nottake an excessive amount of air from the pressure fuel tank if the burner is only operated inthis manner suiciently long' to adequately heat the generator valve tube` 31." .Y A

After this tube is heated and the stove is taking liquid fuel through the regular valve, such additionallburners as'desired may be provided with fuel-by any suitable valves and stove connections which: have not been Y shown. Y

that the spring 46 `or other spiral member i come within the spirit and v,scope of the appended claims.

l claim:

1. ln a vapor stove, a pressure fuel tank, a mixing valve connected to the air under pressure in the top of the tank, a connection be- 2@ tween the mixing valve and the liquid fuel in the tank, a generator, a connection between the mixing valve and the generator, and a separate valve controlled connection between A the generator and liquid fuel in the tank,

2. lin a vapor stove, a tubular generator having a discharge end, an 'adjustable valve member extending lengthwiseof the tubular A member. valve controlled means for admitting a mixture of fuel and air to the generator a@ and separate valve controlled means for adi mitting a liquid fuel to the generator. y 3; -n a vapor stove, a vpressure fuel tank,

a mixing valve, amixing chamber in said valve, a connection between the mixing cham- 3g ber and the liquid fuel in the tank, a separate connection between the mixing chamber and the air under pressure in the tank, a tubulargenerator, a valve controlled passage from the mixing chamber to the generator, and a o valve controlled passage from the generator to the liquid fuel in the tank.

4. In a vapor stove, a pressure fuel tank, a mixing valve having a 'mixing chamber therein, separate connections from the chamber to the air ,in the fuel tank and to the liquid fuel in the fuel tank, plugs having calibrated orifices for controlling the 'How of fuel and of air to said mixing chamber, a generator, a valve controlled connection from the mixing chamber to the generator, and a. connection from the generator to the liquid fuel in the tank'.

Signed at Wisconsin Rapids, Wisconsin, this 26th day of March, 1929.

u ANTON J. YEAGER. 

